Double network composite hydrogel and its preparation method and oil-water separator

A composite hydrogel and double network technology, applied in the field of materials, can solve the problems of high swelling rate and irreparableness of hydrogel coatings, and achieve the effects of low self-healing effect, excellent tensile properties and long service life.
CN108164643BActive Publication Date: 2020-09-11合肥龙智机电科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
合肥龙智机电科技有限公司
Publication Date
2020-09-11

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Abstract

The invention relates to the field of materials, in particular to double-network composite hydrogel, a preparation method of the double-network composite hydrogel, and an oil-water separator. According to the method, an amino modified silicon dioxide nanoparticle, an acrylamide-acrylic acid copolymer and chitosan are cross-linked into a double-network structure by two pure physical effects of a hydrogen bond and an ionic bond; the double-network composite hydrogel has excellent tensile and underwater super-lipophobic properties, a certain self-repairing effect and a smaller swelling ratio; andthe oil-water separator prepared by coating a copper net with the double-network composite hydrogel is long in life and difficult to damage. The tensile strain of the double-network composite hydrogel is 1500-2000%; the tensile stress is 400-450kpa; a self-healing effect is obvious; the swelling ratio is smaller; and an underwater contact angle reaches 164 DEG. The separation efficiency of the oil-water separator on an oil-water mixture reaches 99.71%, and the hydrogel is an oil-water separation material with good development prospects.
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Description

technical field

[0001] The invention relates to the field of materials, in particular to a double-network composite hydrogel, a preparation method thereof, and an oil-water separator. Background technique

[0002] At present, energy and environmental issues are still serious problems facing the development of human society. Since oil is one of the most important sources of energy for human beings, and the increase in industrial oily wastewater and frequent oil spills around the world from time to time, the environment There is a strong need for materials that can effectively separate oil and water from economic and economic needs. Scientists from all over the world have developed various solutions, among which the preparation and use of oil-water separators is one of the most effective and convenient methods.

[0003] Hydrophilic and underwater superoleophobic hydrogel coating grids in an oil / water / solid three-phase system, constructed from rough nanostructured hydrogel coat...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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